Topological kagome magnets and superconductors

JX Yin, B Lian, MZ Hasan - Nature, 2022 - nature.com
A kagome lattice naturally features Dirac fermions, flat bands and van Hove singularities in
its electronic structure. The Dirac fermions encode topology, flat bands favour correlated …

High Resolution Polar Kerr Effect Studies of : Tests for Time-Reversal Symmetry Breaking below the Charge-Order Transition

DR Saykin, C Farhang, ED Kountz, D Chen, BR Ortiz… - Physical Review Letters, 2023 - APS
We report high resolution polar Kerr effect measurements on CsV 3 Sb 5 single crystals in
search of signatures of spontaneous time-reversal symmetry breaking below the charge …

Anomalous enhancement of charge density wave in kagome superconductor CsV3Sb5 approaching the 2D limit

B Song, T Ying, X Wu, W Xia, Q Yin, Q Zhang… - Nature …, 2023 - nature.com
The recently discovered kagome metals AV3Sb5 (A= Cs, Rb, K) exhibit a variety of intriguing
phenomena, such as a charge density wave (CDW) with time-reversal symmetry breaking …

Charge-loop current order and Z3 nematicity mediated by bond order fluctuations in kagome metals

R Tazai, Y Yamakawa, H Kontani - Nature Communications, 2023 - nature.com
Recent experiments on geometrically frustrated kagome metal A V3Sb5 (A= K, Rb, Cs) have
revealed the emergence of the charge loop current (cLC) order near the bond order (BO) …

Loop currents in kagome metals: Multipolar and toroidal magnetic orders

MH Christensen, T Birol, BM Andersen, RM Fernandes - Physical Review B, 2022 - APS
Experiments in the recently discovered vanadium-based kagome metals have suggested
that their charge-ordered state displays not only bond distortions, characteristic of a “real” …

Discovery of conjoined charge density waves in the kagome superconductor CsV3Sb5

H Li, G Fabbris, AH Said, JP Sun, YX Jiang… - Nature …, 2022 - nature.com
The electronic instabilities in CsV3Sb5 are believed to originate from the V 3 d-electrons on
the kagome plane, however the role of Sb 5 p-electrons for 3-dimensional orders is largely …

Chiral excitonic order from twofold van Hove singularities in kagome metals

HD Scammell, J Ingham, T Li, OP Sushkov - Nature Communications, 2023 - nature.com
Recent experiments on kagome metals AV3Sb5 (A= K, Rb, Cs) identify twofold van Hove
singularities (TvHS) with opposite concavity near the Fermi energy, generating two …

Incommensurate charge-stripe correlations in the kagome superconductor CsV3Sb5−xSnx

L Kautzsch, YM Oey, H Li, Z Ren, BR Ortiz… - npj Quantum …, 2023 - nature.com
The class of A V3Sb5 (A= K, Rb, Cs) kagome metals hosts unconventional charge density
wave states seemingly intertwined with their low temperature superconducting phases. The …

Structure of the kagome superconductor in the charge density wave state

Y Wang, T Wu, Z Li, K Jiang, J Hu - Physical Review B, 2023 - APS
The structure of charge density wave states in AV 3 Sb 5 (A= K, Rb, Cs) kagome
superconductors remains elusive, with three possible 2 a× 2 a× 2 c candidates …

Complete miscibility amongst the kagome superconductors: Design of mixed -site (: K, Rb, Cs) alloys

BR Ortiz, AN Capa Salinas, MJ Knudtson, PM Sarte… - Physical Review …, 2023 - APS
In this paper, we explore the chemical-property phase diagram of the AV 3 Sb 5 family
through A-site alloying. We demonstrate full miscibility of the alkali site, highlighting that the …